<table>
  <tr>
    <th>ID</th>
    <th>NAME</th>
    <th>GENDER</th>
    <th>OPTION</th>
  </tr>
  <tr *ngFor="let student of students">
    <td>{{student.id}}</td>
    <td>{{student.name}}</td>
    <td>{{student.gender}}</td>
    <td>稍后完成</td>
  </tr>
</table>
每页显示<input (blur)="change()" [(ngModel)]="pageSize">
<button (click)="up()">上一页</button>
{{pageNum}}
<button (click)="down()">下一页</button>
共
{{pages}}
页
